I need to make some new main braces on a /5 dirtbike subframe. They will curve around the shocks so will need to bend them alittle. Any ideas/suggestions on what to use. I assume the airheads just used mild steel, but frankly don't know much about it all. I looked at some carbon steel tubing online and lots of wall thickness etc. Thanks.

"Between two explanations, choose the clearest; between two forms,
the most elementary; between two expressions, the shortest."
Between two motorcycles the simplest (DW)
Eugeni d' Ors (1881-1954); Spanish writer.